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Analytical formulation of distortion and chirp in CATV DFB lasers including spatial hole burning

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3 Author(s)
R. Vinzio ; Service Radio, Ecole Superieure d'Electr., Gif-sur-Yvette, France ; Z. Toffano ; A. Destrez

Analytical formulas for distortions permitting the calculation of composite second order (CSO) and composite triple beat (CTB) in distributed feedback (DFB) laser diodes are given, including gain compression and longitudinal spatial hole burning (LSHB). An improved chirp expression including both effects is also proposed. Gain compression is compared to LSHB over the CATV band: LSHB effects on distortion and chirp are found to be dominant in actual CATV lasers. Nonmonotonous behavior (dips) function of frequency and bias current is verified in second- and third-order distortions in agreement with recent results

Published in:

IEEE Journal of Quantum Electronics  (Volume:34 ,  Issue: 2 )